How can my girlfriend a green card or extension to get their work visa?

relationship girlfriend: question confused : How can my girlfriend a green card or extension to get their perform visa How can my girlfriend a green card or extension for mine their operate visa? girlfriends visa is up in two months. We strategy to get married. If we can extend their visa or maybe they can get a green card? She is originally from Colombia. I do not know what to do or exactly where they will get this info. I do not want to lose it wants to return a lot of $ $ $ for them,

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